libavdevice/v4l.c

   1 /*
   2  * Linux video grab interface
   3  * Copyright (c) 2000,2001 Fabrice Bellard.
   4  *
   5  * This file is part of FFmpeg.
   6  *
   7  * FFmpeg is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * FFmpeg is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with FFmpeg; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  20  */
  21 #include "avformat.h"
  22 #include "dsputil.h"
  23 #include <unistd.h>
  24 #include <fcntl.h>
  25 #include <sys/ioctl.h>
  26 #include <sys/mman.h>
  27 #include <sys/time.h>
  28 #define _LINUX_TIME_H 1
  29 #include <linux/videodev.h>
  30 #include <time.h>
  31
  32 typedef struct {
  33     int fd;
  34     int frame_format; /* see VIDEO_PALETTE_xxx */
  35     int use_mmap;
  36     int width, height;
  37     int frame_rate;
  38     int frame_rate_base;
  39     int64_t time_frame;
  40     int frame_size;
  41     struct video_capability video_cap;
  42     struct video_audio audio_saved;
  43     uint8_t *video_buf;
  44     struct video_mbuf gb_buffers;
  45     struct video_mmap gb_buf;
  46     int gb_frame;
  47
  48     /* ATI All In Wonder specific stuff */
  49     /* XXX: remove and merge in libavcodec/imgconvert.c */
  50     int aiw_enabled;
  51     int deint;
  52     int halfw;
  53     uint8_t *src_mem;
  54     uint8_t *lum_m4_mem;
  55 } VideoData;
  56
  57 struct {
  58     int palette;
  59     int depth;
  60     enum PixelFormat pix_fmt;
  61 } video_formats [] = {
  62     {.palette = VIDEO_PALETTE_YUV420P, .depth = 12, .pix_fmt = PIX_FMT_YUV420P },
  63     {.palette = VIDEO_PALETTE_YUV422,  .depth = 16, .pix_fmt = PIX_FMT_YUYV422 },
  64     {.palette = VIDEO_PALETTE_UYVY,    .depth = 16, .pix_fmt = PIX_FMT_UYVY422 },
  65     {.palette = VIDEO_PALETTE_YUYV,    .depth = 16, .pix_fmt = PIX_FMT_YUYV422 },
  66     /* NOTE: v4l uses BGR24, not RGB24 */
  67     {.palette = VIDEO_PALETTE_RGB24,   .depth = 24, .pix_fmt = PIX_FMT_BGR24   },
  68     {.palette = VIDEO_PALETTE_RGB565,  .depth = 16, .pix_fmt = PIX_FMT_BGR565  },
  69     {.palette = VIDEO_PALETTE_GREY,    .depth = 8,  .pix_fmt = PIX_FMT_GRAY8   },
  70 };
  71
  72
  73 static int aiw_init(VideoData *s);
  74 static int aiw_read_picture(VideoData *s, uint8_t *data);
  75 static int aiw_close(VideoData *s);
  76
  77 static int grab_read_header(AVFormatContext *s1, AVFormatParameters *ap)
  78 {
  79     VideoData *s = s1->priv_data;
  80     AVStream *st;
  81     int width, height;
  82     int video_fd, frame_size;
  83     int ret, frame_rate, frame_rate_base;
  84     int desired_palette, desired_depth;
  85     struct video_tuner tuner;
  86     struct video_audio audio;
  87     struct video_picture pict;
  88     int j;
  89     int vformat_num = sizeof(video_formats) / sizeof(video_formats[0]);
  90
  91     if (ap->width <= 0 || ap->height <= 0 || ap->time_base.den <= 0) {
  92         av_log(s1, AV_LOG_ERROR, "Bad capture size (%dx%d) or wrong time base (%d)\n",
  93             ap->width, ap->height, ap->time_base.den);
  94
  95         return -1;
  96     }
  97
  98     width = ap->width;
  99     height = ap->height;
 100     frame_rate      = ap->time_base.den;
 101     frame_rate_base = ap->time_base.num;
 102
 103     if((unsigned)width > 32767 || (unsigned)height > 32767) {
 104         av_log(s1, AV_LOG_ERROR, "Capture size is out of range: %dx%d\n",
 105             width, height);
 106
 107         return -1;
 108     }
 109
 110     st = av_new_stream(s1, 0);
 111     if (!st)
 112         return AVERROR(ENOMEM);
 113     av_set_pts_info(st, 64, 1, 1000000); /* 64 bits pts in us */
 114
 115     s->width = width;
 116     s->height = height;
 117     s->frame_rate      = frame_rate;
 118     s->frame_rate_base = frame_rate_base;
 119
 120     video_fd = open(s1->filename, O_RDWR);
 121     if (video_fd < 0) {
 122         av_log(s1, AV_LOG_ERROR, "%s: %s\n", s1->filename, strerror(errno));
 123         goto fail;
 124     }
 125
 126     if (ioctl(video_fd,VIDIOCGCAP, &s->video_cap) < 0) {
 127         av_log(s1, AV_LOG_ERROR, "VIDIOCGCAP: %s\n", strerror(errno));
 128         goto fail;
 129     }
 130
 131     if (!(s->video_cap.type & VID_TYPE_CAPTURE)) {
 132         av_log(s1, AV_LOG_ERROR, "Fatal: grab device does not handle capture\n");
 133         goto fail;
 134     }
 135
 136     desired_palette = -1;
 137     desired_depth = -1;
 138     for (j = 0; j < vformat_num; j++) {
 139         if (ap->pix_fmt == video_formats[j].pix_fmt) {
 140             desired_palette = video_formats[j].palette;
 141             desired_depth = video_formats[j].depth;
 142             break;
 143         }
 144     }
 145
 146     /* set tv standard */
 147     if (ap->standard && !ioctl(video_fd, VIDIOCGTUNER, &tuner)) {
 148         if (!strcasecmp(ap->standard, "pal"))
 149             tuner.mode = VIDEO_MODE_PAL;
 150         else if (!strcasecmp(ap->standard, "secam"))
 151             tuner.mode = VIDEO_MODE_SECAM;
 152         else
 153             tuner.mode = VIDEO_MODE_NTSC;
 154         ioctl(video_fd, VIDIOCSTUNER, &tuner);
 155     }
 156
 157     /* unmute audio */
 158     audio.audio = 0;
 159     ioctl(video_fd, VIDIOCGAUDIO, &audio);
 160     memcpy(&s->audio_saved, &audio, sizeof(audio));
 161     audio.flags &= ~VIDEO_AUDIO_MUTE;
 162     ioctl(video_fd, VIDIOCSAUDIO, &audio);
 163
 164     ioctl(video_fd, VIDIOCGPICT, &pict);
 165 #if 0
 166     printf("v4l: colour=%d hue=%d brightness=%d constrast=%d whiteness=%d\n",
 167            pict.colour,
 168            pict.hue,
 169            pict.brightness,
 170            pict.contrast,
 171            pict.whiteness);
 172 #endif
 173     /* try to choose a suitable video format */
 174     pict.palette = desired_palette;
 175     pict.depth= desired_depth;
 176     if (desired_palette == -1 || (ret = ioctl(video_fd, VIDIOCSPICT, &pict)) < 0) {
 177         for (j = 0; j < vformat_num; j++) {
 178             pict.palette = video_formats[j].palette;
 179             pict.depth = video_formats[j].depth;
 180             if (-1 != ioctl(video_fd, VIDIOCSPICT, &pict))
 181                 break;
 182         }
 183         if (j >= vformat_num)
 184             goto fail1;
 185     }
 186
 187     ret = ioctl(video_fd,VIDIOCGMBUF,&s->gb_buffers);
 188     if (ret < 0) {
 189         /* try to use read based access */
 190         struct video_window win;
 191         int val;
 192
 193         win.x = 0;
 194         win.y = 0;
 195         win.width = width;
 196         win.height = height;
 197         win.chromakey = -1;
 198         win.flags = 0;
 199
 200         ioctl(video_fd, VIDIOCSWIN, &win);
 201
 202         s->frame_format = pict.palette;
 203
 204         val = 1;
 205         ioctl(video_fd, VIDIOCCAPTURE, &val);
 206
 207         s->time_frame = av_gettime() * s->frame_rate / s->frame_rate_base;
 208         s->use_mmap = 0;
 209
 210         /* ATI All In Wonder automatic activation */
 211         if (!strcmp(s->video_cap.name, "Km")) {
 212             if (aiw_init(s) < 0)
 213                 goto fail;
 214             s->aiw_enabled = 1;
 215             /* force 420P format because conversion from YUV422 to YUV420P
 216                is done in this driver (ugly) */
 217             s->frame_format = VIDEO_PALETTE_YUV420P;
 218         }
 219     } else {
 220         s->video_buf = mmap(0,s->gb_buffers.size,PROT_READ|PROT_WRITE,MAP_SHARED,video_fd,0);
 221         if ((unsigned char*)-1 == s->video_buf) {
 222             s->video_buf = mmap(0,s->gb_buffers.size,PROT_READ|PROT_WRITE,MAP_PRIVATE,video_fd,0);
 223             if ((unsigned char*)-1 == s->video_buf) {
 224                 av_log(s1, AV_LOG_ERROR, "mmap: %s\n", strerror(errno));
 225                 goto fail;
 226             }
 227         }
 228         s->gb_frame = 0;
 229         s->time_frame = av_gettime() * s->frame_rate / s->frame_rate_base;
 230
 231         /* start to grab the first frame */
 232         s->gb_buf.frame = s->gb_frame % s->gb_buffers.frames;
 233         s->gb_buf.height = height;
 234         s->gb_buf.width = width;
 235         s->gb_buf.format = pict.palette;
 236
 237         ret = ioctl(video_fd, VIDIOCMCAPTURE, &s->gb_buf);
 238         if (ret < 0) {
 239             if (errno != EAGAIN) {
 240             fail1:
 241                 av_log(s1, AV_LOG_ERROR, "Fatal: grab device does not support suitable format\n");
 242             } else {
 243                 av_log(s1, AV_LOG_ERROR,"Fatal: grab device does not receive any video signal\n");
 244             }
 245             goto fail;
 246         }
 247         for (j = 1; j < s->gb_buffers.frames; j++) {
 248           s->gb_buf.frame = j;
 249           ioctl(video_fd, VIDIOCMCAPTURE, &s->gb_buf);
 250         }
 251         s->frame_format = s->gb_buf.format;
 252         s->use_mmap = 1;
 253     }
 254
 255     for (j = 0; j < vformat_num; j++) {
 256         if (s->frame_format == video_formats[j].palette) {
 257             frame_size = width * height * video_formats[j].depth / 8;
 258             st->codec->pix_fmt = video_formats[j].pix_fmt;
 259             break;
 260         }
 261     }
 262
 263     if (j >= vformat_num)
 264         goto fail;
 265
 266     s->fd = video_fd;
 267     s->frame_size = frame_size;
 268
 269     st->codec->codec_type = CODEC_TYPE_VIDEO;
 270     st->codec->codec_id = CODEC_ID_RAWVIDEO;
 271     st->codec->width = width;
 272     st->codec->height = height;
 273     st->codec->time_base.den      = frame_rate;
 274     st->codec->time_base.num = frame_rate_base;
 275     st->codec->bit_rate = frame_size * 1/av_q2d(st->codec->time_base) * 8;
 276
 277     return 0;
 278  fail:
 279     if (video_fd >= 0)
 280         close(video_fd);
 281     av_free(st);
 282     return AVERROR(EIO);
 283 }
 284
 285 static int v4l_mm_read_picture(VideoData *s, uint8_t *buf)
 286 {
 287     uint8_t *ptr;
 288
 289     while (ioctl(s->fd, VIDIOCSYNC, &s->gb_frame) < 0 &&
 290            (errno == EAGAIN || errno == EINTR));
 291
 292     ptr = s->video_buf + s->gb_buffers.offsets[s->gb_frame];
 293     memcpy(buf, ptr, s->frame_size);
 294
 295     /* Setup to capture the next frame */
 296     s->gb_buf.frame = s->gb_frame;
 297     if (ioctl(s->fd, VIDIOCMCAPTURE, &s->gb_buf) < 0) {
 298         if (errno == EAGAIN)
 299             av_log(NULL, AV_LOG_ERROR, "Cannot Sync\n");
 300         else
 301             av_log(NULL, AV_LOG_ERROR, "VIDIOCMCAPTURE: %s\n", strerror(errno));
 302         return AVERROR(EIO);
 303     }
 304
 305     /* This is now the grabbing frame */
 306     s->gb_frame = (s->gb_frame + 1) % s->gb_buffers.frames;
 307
 308     return s->frame_size;
 309 }
 310
 311 static int grab_read_packet(AVFormatContext *s1, AVPacket *pkt)
 312 {
 313     VideoData *s = s1->priv_data;
 314     int64_t curtime, delay;
 315     struct timespec ts;
 316
 317     /* Calculate the time of the next frame */
 318     s->time_frame += INT64_C(1000000);
 319
 320     /* wait based on the frame rate */
 321     for(;;) {
 322         curtime = av_gettime();
 323         delay = s->time_frame  * s->frame_rate_base / s->frame_rate - curtime;
 324         if (delay <= 0) {
 325             if (delay < INT64_C(-1000000) * s->frame_rate_base / s->frame_rate) {
 326                 /* printf("grabbing is %d frames late (dropping)\n", (int) -(delay / 16666)); */
 327                 s->time_frame += INT64_C(1000000);
 328             }
 329             break;
 330         }
 331         ts.tv_sec = delay / 1000000;
 332         ts.tv_nsec = (delay % 1000000) * 1000;
 333         nanosleep(&ts, NULL);
 334     }
 335
 336     if (av_new_packet(pkt, s->frame_size) < 0)
 337         return AVERROR(EIO);
 338
 339     pkt->pts = curtime;
 340
 341     /* read one frame */
 342     if (s->aiw_enabled) {
 343         return aiw_read_picture(s, pkt->data);
 344     } else if (s->use_mmap) {
 345         return v4l_mm_read_picture(s, pkt->data);
 346     } else {
 347         if (read(s->fd, pkt->data, pkt->size) != pkt->size)
 348             return AVERROR(EIO);
 349         return s->frame_size;
 350     }
 351 }
 352
 353 static int grab_read_close(AVFormatContext *s1)
 354 {
 355     VideoData *s = s1->priv_data;
 356
 357     if (s->aiw_enabled)
 358         aiw_close(s);
 359
 360     if (s->use_mmap)
 361         munmap(s->video_buf, s->gb_buffers.size);
 362
 363     /* mute audio. we must force it because the BTTV driver does not
 364        return its state correctly */
 365     s->audio_saved.flags |= VIDEO_AUDIO_MUTE;
 366     ioctl(s->fd, VIDIOCSAUDIO, &s->audio_saved);
 367
 368     close(s->fd);
 369     return 0;
 370 }
 371
 372 AVInputFormat v4l_demuxer = {
 373     "video4linux",
 374     "video grab",
 375     sizeof(VideoData),
 376     NULL,
 377     grab_read_header,
 378     grab_read_packet,
 379     grab_read_close,
 380     .flags = AVFMT_NOFILE,
 381 };
 382
 383 /* All in Wonder specific stuff */
 384 /* XXX: remove and merge in libavcodec/imgconvert.c */
 385
 386 static int aiw_init(VideoData *s)
 387 {
 388     int width, height;
 389
 390     width = s->width;
 391     height = s->height;
 392
 393     if ((width == s->video_cap.maxwidth && height == s->video_cap.maxheight) ||
 394         (width == s->video_cap.maxwidth && height == s->video_cap.maxheight*2) ||
 395         (width == s->video_cap.maxwidth/2 && height == s->video_cap.maxheight)) {
 396
 397         s->deint=0;
 398         s->halfw=0;
 399         if (height == s->video_cap.maxheight*2) s->deint=1;
 400         if (width == s->video_cap.maxwidth/2) s->halfw=1;
 401     } else {
 402         av_log(NULL, AV_LOG_ERROR, "\nIncorrect Grab Size Supplied - Supported Sizes Are:\n");
 403         av_log(NULL, AV_LOG_ERROR, " %dx%d  %dx%d %dx%d\n\n",
 404                 s->video_cap.maxwidth,s->video_cap.maxheight,
 405                 s->video_cap.maxwidth,s->video_cap.maxheight*2,
 406                 s->video_cap.maxwidth/2,s->video_cap.maxheight);
 407         goto fail;
 408     }
 409
 410     if (s->halfw == 0) {
 411         s->src_mem = av_malloc(s->width*2);
 412     } else {
 413         s->src_mem = av_malloc(s->width*4);
 414     }
 415     if (!s->src_mem) goto fail;
 416
 417     s->lum_m4_mem = av_malloc(s->width);
 418     if (!s->lum_m4_mem)
 419         goto fail;
 420     return 0;
 421  fail:
 422     av_freep(&s->src_mem);
 423     av_freep(&s->lum_m4_mem);
 424     return -1;
 425 }
 426
 427 #ifdef HAVE_MMX
 428 #include "i386/mmx.h"
 429
 430 #define LINE_WITH_UV \
 431                     movq_m2r(ptr[0],mm0); \
 432                     movq_m2r(ptr[8],mm1);  \
 433                     movq_r2r(mm0, mm4); \
 434                     punpcklbw_r2r(mm1,mm0); \
 435                     punpckhbw_r2r(mm1,mm4); \
 436                     movq_r2r(mm0,mm5); \
 437                     punpcklbw_r2r(mm4,mm0); \
 438                     punpckhbw_r2r(mm4,mm5); \
 439                     movq_r2r(mm0,mm1); \
 440                     punpcklbw_r2r(mm5,mm1); \
 441                     movq_r2m(mm1,lum[0]); \
 442                     movq_m2r(ptr[16],mm2); \
 443                     movq_m2r(ptr[24],mm1); \
 444                     movq_r2r(mm2,mm4); \
 445                     punpcklbw_r2r(mm1,mm2); \
 446                     punpckhbw_r2r(mm1,mm4); \
 447                     movq_r2r(mm2,mm3); \
 448                     punpcklbw_r2r(mm4,mm2); \
 449                     punpckhbw_r2r(mm4,mm3); \
 450                     movq_r2r(mm2,mm1); \
 451                     punpcklbw_r2r(mm3,mm1); \
 452                     movq_r2m(mm1,lum[8]); \
 453                     punpckhdq_r2r(mm2,mm0); \
 454                     punpckhdq_r2r(mm3,mm5); \
 455                     movq_r2m(mm0,cb[0]); \
 456                     movq_r2m(mm5,cr[0]);
 457
 458 #define LINE_NO_UV \
 459                     movq_m2r(ptr[0],mm0);\
 460                     movq_m2r(ptr[8],mm1);\
 461                     movq_r2r(mm0, mm4);\
 462                     punpcklbw_r2r(mm1,mm0); \
 463                     punpckhbw_r2r(mm1,mm4);\
 464                     movq_r2r(mm0,mm5);\
 465                     punpcklbw_r2r(mm4,mm0);\
 466                     punpckhbw_r2r(mm4,mm5);\
 467                     movq_r2r(mm0,mm1);\
 468                     punpcklbw_r2r(mm5,mm1);\
 469                     movq_r2m(mm1,lum[0]);\
 470                     movq_m2r(ptr[16],mm2);\
 471                     movq_m2r(ptr[24],mm1);\
 472                     movq_r2r(mm2,mm4);\
 473                     punpcklbw_r2r(mm1,mm2);\
 474                     punpckhbw_r2r(mm1,mm4);\
 475                     movq_r2r(mm2,mm3);\
 476                     punpcklbw_r2r(mm4,mm2);\
 477                     punpckhbw_r2r(mm4,mm3);\
 478                     movq_r2r(mm2,mm1);\
 479                     punpcklbw_r2r(mm3,mm1);\
 480                     movq_r2m(mm1,lum[8]);
 481
 482 #define LINE_WITHUV_AVG \
 483                     movq_m2r(ptr[0], mm0);\
 484                     movq_m2r(ptr[8], mm1);\
 485                     movq_r2r(mm0, mm4);\
 486                     punpcklbw_r2r(mm1,mm0);\
 487                     punpckhbw_r2r(mm1,mm4);\
 488                     movq_r2r(mm0,mm5);\
 489                     punpcklbw_r2r(mm4,mm0);\
 490                     punpckhbw_r2r(mm4,mm5);\
 491                     movq_r2r(mm0,mm1);\
 492                     movq_r2r(mm5,mm2);\
 493                     punpcklbw_r2r(mm7,mm1);\
 494                     punpcklbw_r2r(mm7,mm2);\
 495                     paddw_r2r(mm6,mm1);\
 496                     paddw_r2r(mm2,mm1);\
 497                     psraw_i2r(1,mm1);\
 498                     packuswb_r2r(mm7,mm1);\
 499                     movd_r2m(mm1,lum[0]);\
 500                     movq_m2r(ptr[16],mm2);\
 501                     movq_m2r(ptr[24],mm1);\
 502                     movq_r2r(mm2,mm4);\
 503                     punpcklbw_r2r(mm1,mm2);\
 504                     punpckhbw_r2r(mm1,mm4);\
 505                     movq_r2r(mm2,mm3);\
 506                     punpcklbw_r2r(mm4,mm2);\
 507                     punpckhbw_r2r(mm4,mm3);\
 508                     movq_r2r(mm2,mm1);\
 509                     movq_r2r(mm3,mm4);\
 510                     punpcklbw_r2r(mm7,mm1);\
 511                     punpcklbw_r2r(mm7,mm4);\
 512                     paddw_r2r(mm6,mm1);\
 513                     paddw_r2r(mm4,mm1);\
 514                     psraw_i2r(1,mm1);\
 515                     packuswb_r2r(mm7,mm1);\
 516                     movd_r2m(mm1,lum[4]);\
 517                     punpckhbw_r2r(mm7,mm0);\
 518                     punpckhbw_r2r(mm7,mm2);\
 519                     paddw_r2r(mm6,mm0);\
 520                     paddw_r2r(mm2,mm0);\
 521                     psraw_i2r(1,mm0);\
 522                     packuswb_r2r(mm7,mm0);\
 523                     punpckhbw_r2r(mm7,mm5);\
 524                     punpckhbw_r2r(mm7,mm3);\
 525                     paddw_r2r(mm6,mm5);\
 526                     paddw_r2r(mm3,mm5);\
 527                     psraw_i2r(1,mm5);\
 528                     packuswb_r2r(mm7,mm5);\
 529                     movd_r2m(mm0,cb[0]);\
 530                     movd_r2m(mm5,cr[0]);
 531
 532 #define LINE_NOUV_AVG \
 533                     movq_m2r(ptr[0],mm0);\
 534                     movq_m2r(ptr[8],mm1);\
 535                     pand_r2r(mm5,mm0);\
 536                     pand_r2r(mm5,mm1);\
 537                     pmaddwd_r2r(mm6,mm0);\
 538                     pmaddwd_r2r(mm6,mm1);\
 539                     packssdw_r2r(mm1,mm0);\
 540                     paddw_r2r(mm6,mm0);\
 541                     psraw_i2r(1,mm0);\
 542                     movq_m2r(ptr[16],mm2);\
 543                     movq_m2r(ptr[24],mm3);\
 544                     pand_r2r(mm5,mm2);\
 545                     pand_r2r(mm5,mm3);\
 546                     pmaddwd_r2r(mm6,mm2);\
 547                     pmaddwd_r2r(mm6,mm3);\
 548                     packssdw_r2r(mm3,mm2);\
 549                     paddw_r2r(mm6,mm2);\
 550                     psraw_i2r(1,mm2);\
 551                     packuswb_r2r(mm2,mm0);\
 552                     movq_r2m(mm0,lum[0]);
 553
 554 #define DEINT_LINE_LUM(ptroff) \
 555                     movd_m2r(lum_m4[(ptroff)],mm0);\
 556                     movd_m2r(lum_m3[(ptroff)],mm1);\
 557                     movd_m2r(lum_m2[(ptroff)],mm2);\
 558                     movd_m2r(lum_m1[(ptroff)],mm3);\
 559                     movd_m2r(lum[(ptroff)],mm4);\
 560                     punpcklbw_r2r(mm7,mm0);\
 561                     movd_r2m(mm2,lum_m4[(ptroff)]);\
 562                     punpcklbw_r2r(mm7,mm1);\
 563                     punpcklbw_r2r(mm7,mm2);\
 564                     punpcklbw_r2r(mm7,mm3);\
 565                     punpcklbw_r2r(mm7,mm4);\
 566                     psllw_i2r(2,mm1);\
 567                     psllw_i2r(1,mm2);\
 568                     paddw_r2r(mm6,mm1);\
 569                     psllw_i2r(2,mm3);\
 570                     paddw_r2r(mm2,mm1);\
 571                     paddw_r2r(mm4,mm0);\
 572                     paddw_r2r(mm3,mm1);\
 573                     psubusw_r2r(mm0,mm1);\
 574                     psrlw_i2r(3,mm1);\
 575                     packuswb_r2r(mm7,mm1);\
 576                     movd_r2m(mm1,lum_m2[(ptroff)]);
 577
 578 #else
 579 #include "dsputil.h"
 580
 581 #define LINE_WITH_UV \
 582                     lum[0]=ptr[0];lum[1]=ptr[2];lum[2]=ptr[4];lum[3]=ptr[6];\
 583                     cb[0]=ptr[1];cb[1]=ptr[5];\
 584                     cr[0]=ptr[3];cr[1]=ptr[7];\
 585                     lum[4]=ptr[8];lum[5]=ptr[10];lum[6]=ptr[12];lum[7]=ptr[14];\
 586                     cb[2]=ptr[9];cb[3]=ptr[13];\
 587                     cr[2]=ptr[11];cr[3]=ptr[15];\
 588                     lum[8]=ptr[16];lum[9]=ptr[18];lum[10]=ptr[20];lum[11]=ptr[22];\
 589                     cb[4]=ptr[17];cb[5]=ptr[21];\
 590                     cr[4]=ptr[19];cr[5]=ptr[23];\
 591                     lum[12]=ptr[24];lum[13]=ptr[26];lum[14]=ptr[28];lum[15]=ptr[30];\
 592                     cb[6]=ptr[25];cb[7]=ptr[29];\
 593                     cr[6]=ptr[27];cr[7]=ptr[31];
 594
 595 #define LINE_NO_UV \
 596                     lum[0]=ptr[0];lum[1]=ptr[2];lum[2]=ptr[4];lum[3]=ptr[6];\
 597                     lum[4]=ptr[8];lum[5]=ptr[10];lum[6]=ptr[12];lum[7]=ptr[14];\
 598                     lum[8]=ptr[16];lum[9]=ptr[18];lum[10]=ptr[20];lum[11]=ptr[22];\
 599                     lum[12]=ptr[24];lum[13]=ptr[26];lum[14]=ptr[28];lum[15]=ptr[30];
 600
 601 #define LINE_WITHUV_AVG \
 602                     sum=(ptr[0]+ptr[2]+1) >> 1;lum[0]=sum; \
 603                     sum=(ptr[4]+ptr[6]+1) >> 1;lum[1]=sum; \
 604                     sum=(ptr[1]+ptr[5]+1) >> 1;cb[0]=sum; \
 605                     sum=(ptr[3]+ptr[7]+1) >> 1;cr[0]=sum; \
 606                     sum=(ptr[8]+ptr[10]+1) >> 1;lum[2]=sum; \
 607                     sum=(ptr[12]+ptr[14]+1) >> 1;lum[3]=sum; \
 608                     sum=(ptr[9]+ptr[13]+1) >> 1;cb[1]=sum; \
 609                     sum=(ptr[11]+ptr[15]+1) >> 1;cr[1]=sum; \
 610                     sum=(ptr[16]+ptr[18]+1) >> 1;lum[4]=sum; \
 611                     sum=(ptr[20]+ptr[22]+1) >> 1;lum[5]=sum; \
 612                     sum=(ptr[17]+ptr[21]+1) >> 1;cb[2]=sum; \
 613                     sum=(ptr[19]+ptr[23]+1) >> 1;cr[2]=sum; \
 614                     sum=(ptr[24]+ptr[26]+1) >> 1;lum[6]=sum; \
 615                     sum=(ptr[28]+ptr[30]+1) >> 1;lum[7]=sum; \
 616                     sum=(ptr[25]+ptr[29]+1) >> 1;cb[3]=sum; \
 617                     sum=(ptr[27]+ptr[31]+1) >> 1;cr[3]=sum;
 618
 619 #define LINE_NOUV_AVG \
 620                     sum=(ptr[0]+ptr[2]+1) >> 1;lum[0]=sum; \
 621                     sum=(ptr[4]+ptr[6]+1) >> 1;lum[1]=sum; \
 622                     sum=(ptr[8]+ptr[10]+1) >> 1;lum[2]=sum; \
 623                     sum=(ptr[12]+ptr[14]+1) >> 1;lum[3]=sum; \
 624                     sum=(ptr[16]+ptr[18]+1) >> 1;lum[4]=sum; \
 625                     sum=(ptr[20]+ptr[22]+1) >> 1;lum[5]=sum; \
 626                     sum=(ptr[24]+ptr[26]+1) >> 1;lum[6]=sum; \
 627                     sum=(ptr[28]+ptr[30]+1) >> 1;lum[7]=sum;
 628
 629 #define DEINT_LINE_LUM(ptroff) \
 630                     sum=(-lum_m4[(ptroff)]+(lum_m3[(ptroff)]<<2)+(lum_m2[(ptroff)]<<1)+(lum_m1[(ptroff)]<<2)-lum[(ptroff)]); \
 631                     lum_m4[(ptroff)]=lum_m2[(ptroff)];\
 632                     lum_m2[(ptroff)]=cm[(sum+4)>>3];\
 633                     sum=(-lum_m4[(ptroff)+1]+(lum_m3[(ptroff)+1]<<2)+(lum_m2[(ptroff)+1]<<1)+(lum_m1[(ptroff)+1]<<2)-lum[(ptroff)+1]); \
 634                     lum_m4[(ptroff)+1]=lum_m2[(ptroff)+1];\
 635                     lum_m2[(ptroff)+1]=cm[(sum+4)>>3];\
 636                     sum=(-lum_m4[(ptroff)+2]+(lum_m3[(ptroff)+2]<<2)+(lum_m2[(ptroff)+2]<<1)+(lum_m1[(ptroff)+2]<<2)-lum[(ptroff)+2]); \
 637                     lum_m4[(ptroff)+2]=lum_m2[(ptroff)+2];\
 638                     lum_m2[(ptroff)+2]=cm[(sum+4)>>3];\
 639                     sum=(-lum_m4[(ptroff)+3]+(lum_m3[(ptroff)+3]<<2)+(lum_m2[(ptroff)+3]<<1)+(lum_m1[(ptroff)+3]<<2)-lum[(ptroff)+3]); \
 640                     lum_m4[(ptroff)+3]=lum_m2[(ptroff)+3];\
 641                     lum_m2[(ptroff)+3]=cm[(sum+4)>>3];
 642
 643 #endif
 644
 645
 646 /* Read two fields separately. */
 647 static int aiw_read_picture(VideoData *s, uint8_t *data)
 648 {
 649     uint8_t *ptr, *lum, *cb, *cr;
 650     int h;
 651 #ifndef HAVE_MMX
 652     int sum;
 653 #endif
 654     uint8_t* src = s->src_mem;
 655     uint8_t *ptrend = &src[s->width*2];
 656     lum=data;
 657     cb=&lum[s->width*s->height];
 658     cr=&cb[(s->width*s->height)/4];
 659     if (s->deint == 0 && s->halfw == 0) {
 660         while (read(s->fd,src,s->width*2) < 0) {
 661             usleep(100);
 662         }
 663         for (h = 0; h < s->height-2; h+=2) {
 664             for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, cb+=8, cr+=8) {
 665                 LINE_WITH_UV
 666                     }
 667             read(s->fd,src,s->width*2);
 668             for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16) {
 669                 LINE_NO_UV
 670                     }
 671             read(s->fd,src,s->width*2);
 672         }
 673         /*
 674          * Do last two lines
 675          */
 676         for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, cb+=8, cr+=8) {
 677             LINE_WITH_UV
 678                 }
 679         read(s->fd,src,s->width*2);
 680         for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16) {
 681             LINE_NO_UV
 682                 }
 683         /* drop second field */
 684         while (read(s->fd,src,s->width*2) < 0) {
 685             usleep(100);
 686         }
 687         for (h = 0; h < s->height - 1; h++) {
 688             read(s->fd,src,s->width*2);
 689         }
 690     } else if (s->halfw == 1) {
 691 #ifdef HAVE_MMX
 692         mmx_t rounder;
 693         mmx_t masker;
 694         rounder.uw[0]=1;
 695         rounder.uw[1]=1;
 696         rounder.uw[2]=1;
 697         rounder.uw[3]=1;
 698         masker.ub[0]=0xff;
 699         masker.ub[1]=0;
 700         masker.ub[2]=0xff;
 701         masker.ub[3]=0;
 702         masker.ub[4]=0xff;
 703         masker.ub[5]=0;
 704         masker.ub[6]=0xff;
 705         masker.ub[7]=0;
 706         pxor_r2r(mm7,mm7);
 707         movq_m2r(rounder,mm6);
 708 #endif
 709         while (read(s->fd,src,s->width*4) < 0) {
 710             usleep(100);
 711         }
 712         ptrend = &src[s->width*4];
 713         for (h = 0; h < s->height-2; h+=2) {
 714             for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=8, cb+=4, cr+=4) {
 715                 LINE_WITHUV_AVG
 716                     }
 717             read(s->fd,src,s->width*4);
 718 #ifdef HAVE_MMX
 719             movq_m2r(masker,mm5);
 720 #endif
 721             for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=8) {
 722                 LINE_NOUV_AVG
 723                     }
 724             read(s->fd,src,s->width*4);
 725         }
 726         /*
 727  * Do last two lines
 728  */
 729         for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=8, cb+=4, cr+=4) {
 730             LINE_WITHUV_AVG
 731                 }
 732         read(s->fd,src,s->width*4);
 733 #ifdef HAVE_MMX
 734         movq_m2r(masker,mm5);
 735 #endif
 736         for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=8) {
 737             LINE_NOUV_AVG
 738                 }
 739         /* drop second field */
 740         while (read(s->fd,src,s->width*4) < 0) {
 741             usleep(100);
 742         }
 743         for (h = 0; h < s->height - 1; h++) {
 744             read(s->fd,src,s->width*4);
 745         }
 746     } else {
 747         uint8_t *lum_m1, *lum_m2, *lum_m3, *lum_m4;
 748 #ifdef HAVE_MMX
 749         mmx_t rounder;
 750         rounder.uw[0]=4;
 751         rounder.uw[1]=4;
 752         rounder.uw[2]=4;
 753         rounder.uw[3]=4;
 754         movq_m2r(rounder,mm6);
 755         pxor_r2r(mm7,mm7);
 756 #else
 757         uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
 758 #endif
 759
 760         /* read two fields and deinterlace them */
 761         while (read(s->fd,src,s->width*2) < 0) {
 762             usleep(100);
 763         }
 764         for (h = 0; h < (s->height/2)-2; h+=2) {
 765             for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, cb+=8, cr+=8) {
 766                 LINE_WITH_UV
 767                     }
 768             read(s->fd,src,s->width*2);
 769             /* skip a luminance line - will be filled in later */
 770             lum += s->width;
 771             for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, cb+=8, cr+=8) {
 772                 LINE_WITH_UV
 773                     }
 774             /* skip a luminance line - will be filled in later */
 775             lum += s->width;
 776             read(s->fd,src,s->width*2);
 777         }
 778         /*
 779  * Do last two lines
 780  */
 781         for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, cb+=8, cr+=8) {
 782             LINE_WITH_UV
 783                 }
 784         /* skip a luminance line - will be filled in later */
 785         lum += s->width;
 786         read(s->fd,src,s->width*2);
 787         for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, cb+=8, cr+=8) {
 788             LINE_WITH_UV
 789                 }
 790         /*
 791  *
 792  * SECOND FIELD
 793  *
 794  */
 795         lum=&data[s->width];
 796         while (read(s->fd,src,s->width*2) < 0) {
 797             usleep(10);
 798         }
 799         /* First (and last) two lines not interlaced */
 800         for (h = 0; h < 2; h++) {
 801             for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16) {
 802                 LINE_NO_UV
 803                     }
 804             read(s->fd,src,s->width*2);
 805             /* skip a luminance line */
 806             lum += s->width;
 807         }
 808         lum_m1=&lum[-s->width];
 809         lum_m2=&lum_m1[-s->width];
 810         lum_m3=&lum_m2[-s->width];
 811         memmove(s->lum_m4_mem,&lum_m3[-s->width],s->width);
 812         for (; h < (s->height/2)-1; h++) {
 813             lum_m4=s->lum_m4_mem;
 814             for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16,lum_m1+=16,lum_m2+=16,lum_m3+=16,lum_m4+=16) {
 815                 LINE_NO_UV
 816
 817                     DEINT_LINE_LUM(0)
 818                     DEINT_LINE_LUM(4)
 819                     DEINT_LINE_LUM(8)
 820                     DEINT_LINE_LUM(12)
 821                     }
 822             read(s->fd,src,s->width*2);
 823             /* skip a luminance line */
 824             lum += s->width;
 825             lum_m1 += s->width;
 826             lum_m2 += s->width;
 827             lum_m3 += s->width;
 828             //                lum_m4 += s->width;
 829         }
 830         /*
 831  * Do last line
 832  */
 833         lum_m4=s->lum_m4_mem;
 834         for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, lum_m1+=16, lum_m2+=16, lum_m3+=16, lum_m4+=16) {
 835             LINE_NO_UV
 836
 837                 DEINT_LINE_LUM(0)
 838                 DEINT_LINE_LUM(4)
 839                 DEINT_LINE_LUM(8)
 840                 DEINT_LINE_LUM(12)
 841                 }
 842     }
 843     emms_c();
 844     return s->frame_size;
 845 }
 846
 847 static int aiw_close(VideoData *s)
 848 {
 849     av_freep(&s->lum_m4_mem);
 850     av_freep(&s->src_mem);
 851     return 0;
 852 }